Torts' improvement magic stopped working in Philly

Goals per game differential for NHL teams coached by John Tortorella by year since his first full-time season with the team

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"Previous Year" was for the franchise before Tortorella's first full season (which may have included some games coached by Tortorella in an interim capacity).

Chart: Neil PaineSource: Hockey-ReferenceGet the dataCreated with Datawrapper